<template>
  <div class="cart">
    <NavHeader title="我的购物车">
      <template v-slot:tip>
        <span>温馨提示：产品是否购买成功，以最终下单为准哦，请尽快结算</span>
      </template>
    </NavHeader>
    <div class="wrapper">
      <div class="container">
        <div class="cart-box">
          <ul class="cart-item-head">
            <!-- <li class="col-1"><span class="checkbox" v-bind:class="{'checked':allChecked}" @click="toggleAll"></span>全选</li> -->
            <li class="col-3">商品名称</li>
            <li class="col-1">单价</li>
            <li class="col-2">数量</li>
            <li class="col-1">小计</li>
            <li class="col-1">操作</li>
          </ul>
          <ul class="cart-item-list">
            <li class="cart-item" v-for="item in list" :key="item.productId">
              <div class="item-check">
                <span class="checkbox"></span>
              </div>
              <div class="item-name">
                <img :src="item.productMainImage" alt="">
                <span>{{item.productName}}</span>
              </div>
              <div class="item-price">{{item.productPrice}}元</div>
              <div class="item-num">
                <div class="num-box">
                  <a href="javascript:;" @click="delOne(item.productId)">-</a>
                  <span>1</span>
                  <a href="javascript:;" @click="addOne(item.productId)">+</a>
                </div>
              </div>
              <div class="item-total">{{item.productPrice}}元</div>
              <div class="item-del" @click="delMerchandise(item.productId)"></div>
            </li>
          </ul>
        </div>
        <div class="order-wrap clearfix">
          <div class="cart-tip fl">
            <a href="/">继续购物</a>
            共<span>{{cartTotalQuantity}}</span>件商品，已选择<span>{{0}}</span>件
          </div>
          <div class="total fr">
            合计：<span>{{cartTotalPrice}}</span>元
            <a href="javascript:;" class="btn" @click="order">去结算</a>
          </div>
        </div>
      </div>
    </div>
    <service-bar></service-bar>
  </div>
</template>
<script>
  import NavHeader from './../../components/NavHeader_s'
  import ServiceBar from './../../components/ServiceBar'
  import request from '../../request'
  export default{
    name:'shopCar',
    components:{
      NavHeader,
      ServiceBar
    },
    data(){
      return {
        list: [],
        cartTotalPrice: 0,
        cartTotalQuantity: 0
      }
    },
    mounted() {
      request.get('/order/shopCar')
        .then(({ data }) => {
          const { list = [], cartTotalPrice, cartTotalQuantity } = data;
          this.list = list;
          this.cartTotalPrice = cartTotalPrice;
          this.cartTotalQuantity = cartTotalQuantity;
        })
    },
    methods:{
      // 删除购物车
      delMerchandise(productId) {
        this.list = this.list.filter(c => {
          if (productId == c.productId) {
            this.cartTotalPrice = this.cartTotalPrice - c.productPrice * c.quantity;
            this.cartTotalQuantity--;
          }
          return productId != c.productId;
        })
      },
      delOne(productId) {
        for(let i = 0; i < this.list.length; i++) {
          if (productId == this.list[i].productId) {
            if (this.list[i].quantity == 1) {
              this.$message.error('商品数量不能小于1');
              break;
            }
            break;
          }
        }
      },
      addOne(productId) {
        for(let i = 0; i < this.list.length; i++) {
          if (productId == this.list[i].productId) {
            this.list[i].quantity++
            this.list[i].productTotalPrice = this.list[i].quantity * this.list[i].productPrice
            this.cartTotalPrice = this.cartTotalPrice + this.list[i].productPrice;
            this.cartTotalQuantity = this.cartTotalQuantity++;
            break;
          }
        }
      },
      // 购物车下单
      order(){
        this.$router.push('/order/confirm');
      }
    }
  }
</script>
<style lang="scss">
  .cart{
    .wrapper{
      background-color:#F5F5F5;
      padding-top:30px;
      padding-bottom:114px;
      .cart-box{
        background-color:#fff;
        font-size:14px;
        color:#999999;
        text-align:center;
        .checkbox{
          display: inline-block;
          width: 22px;
          height: 22px;
          border: 1px solid #E5E5E5;
          vertical-align: middle;
          margin-right: 17px;
          cursor:pointer;
          &.checked{
            background:url('/imgs/icon-gou.png') #FF6600 no-repeat center;
            background-size:16px 12px;
            border:none;
          }
        }
        .cart-item-head{
          display:flex;
          height: 79px;
          line-height: 79px;
          .col-1{
            flex:1;
          }
          .col-2{
            flex:2;
          }
          .col-3{
            flex:3;
          }
        }
        .cart-item-list{
          .cart-item{
            display:flex;
            align-items:center;
            height:125px;
            border-top:1px solid #E5E5E5;
            font-size:16px;
            .item-check{
              flex:1;
            }
            .item-name{
              flex:3;
              font-size: 18px;
              color: #333333;
              display: flex;
              align-items: center;
              img{
                width:80px;
                height:80px;
                vertical-align:middle;
              }
              span{
                margin-left: 30px;
              }
            }
            .item-price{
              flex:1;
              color:#333333;
            }
            .item-num{
              flex:2;
              .num-box{
                display:inline-block;
                width:150px;
                height:40px;
                line-height:40px;
                border:1px solid #E5E5E5;
                font-size:14px;
                a{
                  display:inline-block;
                  width:50px;
                  color:#333333;
                }
                span{
                  display:inline-block;
                  width:50px;
                  color:#333333;
                }
              }
            }
            .item-total{
              flex:1;
              color:#FF6600;
            }
            .item-del{
              flex:1;
              width:14px;
              height:12px;
              background:url('/imgs/icon-close.png') no-repeat center;
              background-size:contain;
              cursor:pointer;
            }
          }
        }
      }
      .order-wrap{
        font-size:14px;
        color: #666666;
        margin-top: 20px;
        height: 50px;
        line-height: 50px;
        .cart-tip{
          margin-left: 29px;
          a{
            color: #666666;
            margin-right:37px;
          }
          span{
            color:#FF6600;
            margin:0 5px;
          }
        }
        .total{
          font-size:14px;
          color:#FF6600;
          span{
            font-size:24px;
          }
          a{
            width:202px;
            height:50px;
            line-height:50px;
            font-size:18px;
            margin-left:37px;
          }
        }
      }
    }
  }
</style>